Solve the all parts of following question:
Question: A particle of charge q and mass m moving up the page with velocity v enters a region with a uniform electric field E pointing to the right and a uniform magnetic field B directed into the page.
Part I: Find (symbolically) the magnitude of the electric force on the charge due to the electric field.
Part II: In what direction does the electric force point for positive q?
Part III: Write (symbolically) the magnetic force on the charge due to the magnetic field.
Part IV: In what direction does the magnetic force point for positive q?
Part V: Determine (symbolically) the velocity v for which these two forces balance and the charge experiences zero net force (ignore gravity).
I need help to find in what direction the magnetic force point for positive q.